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Table I GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS Barnes Trucking 1817 South Fresno Avenue,Stockton,California Well Sampling TOC DTW GWE TOG TPHd TPHg B T E X MTBE 8020 MTBE 8260 Niel Oxys ID Date (feet) (feet) (feet) (ug/L) (uglL) (ugIL) 011L) 0191L) OWL) _ (Ag/L) (AWL) (Ag/L) (ARIL) 3/5/2003 2057 1104 953 --- --- 400 53 <0 50 <0 50 <0 50 --- <0 50 --- 6/5/2003 2057 982 10 75* --- --- 170 24 <0 50 <0 50 <0 50 --- <0 50 --- --- 220 3 0 <0 50 <0 50 <0 50 --- <0 50 9116!2003 20 57 12 96 7 61 --- --- 12116/2003 20.57 1178 8.79 --- --- 290 27 <0.50 <0 50 <0.50 --- <0.50 --- Notes TOC Top of casing elevation referenced to project datum (1) BTEX analyzed by EPA method 8260 DTW Depth to water below TOC (2) TOC and GWE value not applicable due to well box damage GWE Groundwater elevation(TQC-DTW) (3) MW-5 damaged BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020 (4) Fuel Oxys analyzed by EPA Method 8240 MTBE Methyl tertiary butyl ether by EPA Method 8020 or EPA Method 8260 --- Not analyzed or measured TPHg Total petroleum hydrocarbons as gasoline by EPA method 5030/8015(modified) µg/L Micrograms per liter TPHd 'Total petroleum hydrocarbons as diesel by EPA method 3510/8015(modified) * Anomalous value TOG Total oil and grease by EPA Method 8015 Fuel Oxys Tertiary butanol,MTBE,Dm-isopropyl ether,Ethyl tertiary butyl ether,and Tertiary amylmethyl ether by EPA Method 8260B or 8240 <### Not detected in concentrations exceeding indicated laboratory reporting limits(DLR)